indexo.dev

tzu.cz

.cz crawl

First seen 2026-05-27 · Last seen 2026-05-30 · ok HTTP/1.1 200 717 ms crawled 2026-05-30

US · 172.67.211.157 · AS13335 Cloudflare, Inc.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
Úvodní strana 🧶 TZÚ
Description
Textilní zkušební ústav, s.p. je leaderem zkušebnictví a certifikace v oblasti textilu.
Language
cs

Open Graph

title
Úvodní strana

Technology

CDN
Cloudflare
PHP
8.0.30 end of life
jQuery
3.6.0
Stack
PHP
Analytics
  • Google Tag Manager

Third-party hosts loaded (5)

  • st3.depositphotos.com×2
  • www.googletagmanager.com×2
  • cdn.requestmetrics.com×1
  • st4.depositphotos.com×1
  • www.facebook.com×1

Social

Contact

Phone

DNS records live

NS
  • braelyn.ns.cloudflare.com
  • bruce.ns.cloudflare.com
MX
  • 10 mail.tzu.cz
Verified for
  • Google

Email authentication partial

SPF
v=spf1 mx mx:tzu.cz include:spf.smartemailing.cz +ip4:87.236.195.134 +ip4:87.236.195.135 include:spf.seznam.cz -all
strict (-all)
DMARC
v=DMARC1; p=none; rua=mailto:dmarc+405101@smartemailing.cz; fo=1
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

WE1
from 2026-04-02 to 2026-07-01
Expires in 30 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.tzu.cz/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (18)

Linked from (2)